Abstract: An air enclosure with a side cushioning function comprises two outer films stacked together vertically and two inner films disposed between the outer films. An air filling passageway is formed between the inner films and a plurality of air filling permissible air cylinders and at least one air filling impermissible air cylinder are formed between the outer films by means of hot sealing, and air entering passageways used for communicating the air filling passageway with the air filling permissible air cylinders are formed by adhering the inner films by means of hot sealing.

Abstract: An inflatable pneumatic bag includes two outer films up-down stacked, and two inner films located between them. By thermal-sealing means, an interval line is formed between upsides and downsides of the two inner films, while a pneumatic passage is formed between the upsides of the two inner films and the interval line. Air tubes are formed between downsides of the two outer films and the interval line, while the two inner films are bonded at the interval line to form air ingress for connecting through the pneumatic passage and the air tube. After thermal-sealing upsides of the two outer films and the interval line, a buffer space is formed between the outer films and the two films. When the air of the air tube is leaking to the buffer space, the air of the buffer space will press the inner films to seal the pneumatic passage and prevent from leaking.

Abstract: A foldable air cushion includes a main air tube piece composed by a main body and buffer walls; and side air tube pieces configured adjacent to the main air tube piece and each composed by a side body and folding portions. A bending line is configured between the main body and the buffer walls, and the side body and the folding portions. A folding line is configured between the main air tube piece and the side air tube pieces, while the folding areas are configured on the side air tube piece adjacent to the intersection of the bending line and the folding line. When the main air tube piece is bended along the bending line, the side bodies of the side air tube pieces are folding along the folding areas, and the side air tube pieces are folded along the folding line, a containing space will be formed between the main air tube piece and the side air tube pieces.